1. Cut a plastic bottle in half, keep both parts. Can be soft drinkbottle.2.Take the lower portion of the bottle. Dissolve the brown sugar in hotwater. Let it cool down to ~70 deg F (room temperature).3.Add the yeast. Carbon dioxide will be formed and will attract themosquitoes.4.Cover the bottle with a dark wrap and insert in the top portion upsidedown like a funnel. Place it in a corner in your house.5. In 2 weeks you will be surprised by the number of mosquitoes killed. Pls. don't forget to share this to all your friends if really care for them.